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    Building management system with efficient model generation for system identification
    112.
    发明授权
    Building management system with efficient model generation for system identification 有权

    公开(公告)号：US10684598B1

    公开(公告)日：2020-06-16

    申请号：US16240028

    申请日：2019-01-04

    Applicant: Johnson Controls Technology Company

    Inventor： Anas W. I. Alanqar ,  Matthew J. Ellis ,  Michael J. Wenzel ,  Juan Esteban Tapiero Bernal

    IPC: G06Q10/04 ,  G05B15/02 ,  G05B23/02

    Abstract: A building management system includes building equipment operable generate training data relating to behavior of a building system and a controller configured to perform a system identification process that includes generating a prediction error function based on the training data and a system model, generating initial guesses of one or more parameters of the system model, running an optimization problem of the prediction error function for a first group of iterations, discarding, after the first group of iterations, a portion of the initial guesses based on one or more criteria and ranking a remaining portion of the initial guesses, running the optimization problem of the prediction error function for a top-ranked initial guess of the remaining portion to local optimality to identify a first set of values of the one or more parameters, and identifying the one or more parameters as having the first set of values.

    PHOTOVOLTAIC ENERGY SYSTEM WITH STATIONARY ENERGY STORAGE CONTROL AND POWER FACTOR CORRECTION
    114.
    发明申请
    PHOTOVOLTAIC ENERGY SYSTEM WITH STATIONARY ENERGY STORAGE CONTROL AND POWER FACTOR CORRECTION 审中-公开

    公开(公告)号：US20200106294A1

    公开(公告)日：2020-04-02

    申请号：US16147356

    申请日：2018-09-28

    Applicant: Johnson Controls Technology Company

    Inventor： Michael J. Wenzel ,  Kirk H. Drees ,  Camille M. Aucoin

    IPC: H02J7/35 ,  H02S40/32 ,  H02S40/38 ,  H02J3/38 ,  H02J3/16 ,  G05B13/04 ,  G06Q30/02 ,  G06Q50/06

    Abstract: An energy storage system includes a photovoltaic energy field, a stationary energy storage device, an energy converter, and a controller. The photovoltaic energy field converts solar energy into electrical energy and charges the stationary energy storage device with the electrical energy. The energy converter converts the electrical energy stored in the stationary energy storage device into AC power at a discharge rate and supplies a campus with the AC power at the discharge rate. The controller predicts a required load of the campus and an electrical generation of the photovoltaic energy field across a time horizon and optimizes a cost function subject to a set of constraints to determine a discharge rate of the AC power to achieve a desired power factor. At least one of the set of constraints applied to the cost function ensures that the energy converter can convert the electrical energy stored in the stationary energy storage device into AC power having the determined power factor and discharge rate.

    INCORPORATING A DEMAND CHARGE IN CENTRAL PLANT OPTIMIZATION
    116.
    发明申请
    INCORPORATING A DEMAND CHARGE IN CENTRAL PLANT OPTIMIZATION 审中-公开

    公开(公告)号：US20190384259A1

    公开(公告)日：2019-12-19

    申请号：US16543320

    申请日：2019-08-16

    Applicant: Johnson Controls Technology Company

    Inventor： Michael J. Wenzel ,  Kirk H. Drees

    IPC: G05B19/418 ,  G05B13/04 ,  G05B15/02 ,  G05F1/66 ,  G06N20/00 ,  G06N99/00 ,  G06Q10/04 ,  G06Q10/06 ,  G06Q50/06 ,  G05B13/02

    Abstract: An optimization system for a central plant includes a processing circuit configured to receive load prediction data indicating building energy loads and utility rate data indicating a price of one or more resources consumed by equipment of the central plant to serve the building energy loads. The optimization system includes a high level optimization module configured to generate an objective function that expresses a total monetary cost of operating the central plant over an optimization period as a function of the utility rate data and an amount of the one or more resources consumed by the central plant equipment. The optimization system includes a demand charge module configured to modify the objective function to account for a demand charge indicating a cost associated with maximum power consumption during a demand charge period. The high level optimization module is configured to optimize the objective function over the demand charge period.

    Systems and methods for determining an appropriate model parameter order
    117.
    发明授权
    Systems and methods for determining an appropriate model parameter order 有权

    公开(公告)号：US10429807B2

    公开(公告)日：2019-10-01

    申请号：US14977594

    申请日：2015-12-21

    Applicant: Johnson Controls Technology Company

    Inventor： Mohammad N. EIBsat ,  Michael J. Wenzel

    IPC: G05B15/02 ,  G06F17/50 ,  G06Q10/00 ,  G06Q50/06 ,  H04L12/28 ,  G06Q10/06

    Abstract: A building analysis system includes a communications interface that receives energy consumption data for a building site including energy-consuming building equipment. A processing circuit of the building analysis system calculates first and second regression statistics indicating a fit of an energy use model to the energy consumption data under a null hypothesis that the energy use model has a first parameter order and an alternative hypothesis that the energy use model has a second parameter order different from the first parameter order. The processing circuit generates a test statistic indicating an improvement between the first regression statistic and the second regression statistic, compares the test statistic to a threshold value to determine whether the improvement warrants rejecting the null hypothesis, and determines an appropriate parameter order for the energy use model based on a result of the comparison.

    CENTRAL PLANT CONTROL SYSTEM WITH PLUG AND PLAY EMPC
    118.
    发明申请
    CENTRAL PLANT CONTROL SYSTEM WITH PLUG AND PLAY EMPC 审中-公开

    公开(公告)号：US20190286114A1

    公开(公告)日：2019-09-19

    申请号：US15921955

    申请日：2018-03-15

    Applicant: Johnson Controls Technology Company

    Inventor： Andrew J. Przybylski ,  Michael J. Wenzel ,  Matthew J. Ellis ,  Jon T. Mueller

    IPC: G05B19/418

    Abstract: Systems and methods for implementing an economic model predictive control (EMPC) strategy in any resource-based system include an EMPC tool. The EMPC tool is configured to present user interfaces to a client device. The EMPC tool is further configured to receive first user input including resources and subplants associated with a central plant. The EMPC tool is also configured to receive second user input including sinks and connections between central plant equipment. The EMPC tool also includes a data model extender configured to extend a data model to define new entities and/or relationships specified by user input. The EMPC tool also includes a high level EMPC algorithm configured to generate an optimization problem and an asset allocator configured to solve the resource optimization problem in order to determine optimal control decisions used to operate the central plant.

    BUILDING MANAGEMENT SYSTEM WITH SATURATION DETECTION AND REMOVAL FOR SYSTEM IDENTIFICATION
    119.
    发明申请
    BUILDING MANAGEMENT SYSTEM WITH SATURATION DETECTION AND REMOVAL FOR SYSTEM IDENTIFICATION 审中-公开

    公开(公告)号：US20190257544A1

    公开(公告)日：2019-08-22

    申请号：US15900459

    申请日：2018-02-20

    Applicant: Johnson Controls Technology Company

    Inventor： Anas W. I. Alanqar ,  Matthew J. Ellis ,  Michael J. Wenzel

    IPC: F24F11/63 ,  G05B13/02 ,  F24F11/00

    Abstract: A building management system includes building equipment, a sensor, and a saturation detector. The building equipment is configured to operate at an operating capacity to drive a variable state or condition of a building zone toward a setpoint. The operating capacity and the setpoint vary over time. The sensor is in the building zone and is configured to provide a zone measurement of the variable state or condition of the building zone. The saturation detector is configured to determine whether the operating capacity is in a non-transient region for a threshold amount of a time period upon determining that an error for the building zone exists for the time period, and, in response to a determination that the operating capacity is in the non-transient region for at least the threshold amount of the time period, indicate the time period as a saturation period.

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